Home / 20,782,181.72-31,168,548.66-9,993,929.42

Finding the Fourth Proportional to 20,782,181.72, 31,168,548.66 and 9,993,929.42

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Solution

The fourth proportional to 20,782,181.72, 31,168,548.66 and 9,993,929.42 is: 14,988,622.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,782,181.72 : 31,168,548.66 = 9,993,929.42 : x
  2. Step 2: Convert to fraction form
    20,782,181.72/31,168,548.66 = 9,993,929.42/x
  3. Step 3: Cross multiply
    20,782,181.72x = 31,168,548.66 × 9,993,929.42
  4. Step 4: Simplify right side
    20,782,181.72x = 311,496,275,431,875.56
  5. Step 5: Solve for x
    x = 311,496,275,431,875.56/20,782,181.72
  6. Step 6: Final answer
    x = 14,988,622.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.